462
FNCA52 TJSJ 220730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST MON JUN 22 2026
DISCUSSION
A FIRE DANGER STATEMENT HAS BEEN ISSUED FOR TODAY ACROSS PORTIONS
OF THE COASTAL PLAINS AND HILLS OF SOUTHERN AND WESTERN PUERTO
RICO, VIEQUES AND ST. CROIX DUE TO THE COMBINATION OF CRITICALLY
DRY FUELS, SUSTAINED WINDS OF 15 TO 20 MPH WITH GUSTS UP TO
30 MPH, AND MINIMUM RELATIVE HUMIDITY VALUES IN THE LOW 50S OR
EVEN IN THE 40S. THESE CONDITIONS WILL FAVOR RAPID WILDFIRE
IGNITION AND EXTREME FIRE BEHAVIOR, MEANING ANY FIRES THAT
DEVELOP WILL LIKELY SPREAD QUICKLY AND BECOME DIFFICULT TO
CONTAIN. OUTDOOR BURNING IS HIGHLY DISCOURAGED.
PRZ014-222000-
SOUTHEAST COASTAL PLAINS-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 0 20 10
TEMP (24H TREND) 93 (+4) 74 (-2) 93
RH % (24H TREND) 44 (-12) 83 (-1) 40
WIND 20FT/EARLY(MPH) E 18 E 14 E 18
WIND 20FT/LATE(MPH) E 18 NE 12 E 21
MIXING HGT(FT-AGL/MSL)4740 6040
TRANSPORT WND (MPH) E 21 E 22
VENT RATE (KT-FT) 85320 114760
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-222000-
SOUTHERN HILLS-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 20
TEMP (24H TREND) 89 (+5) 70 (-3) 89
RH % (24H TREND) 56 (-13) 94 (+1) 55
WIND 20FT/EARLY(MPH) E 16 E 14 E 14
WIND 20FT/LATE(MPH) E 14 NE 13 E 17
MIXING HGT(FT-AGL/MSL)5080 6490
TRANSPORT WND (MPH) E 20 E 21
VENT RATE (KT-FT) 86360 116820
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-222000-
NORTH COASTAL PLAINS-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 10
TEMP (24H TREND) 91 (+2) 74 (-1) 90
RH % (24H TREND) 58 (-9) 95 (0) 58
WIND 20FT/EARLY(MPH) E 17 E 21 E 19
WIND 20FT/LATE(MPH) E 21 E 16 E 20
MIXING HGT(FT-AGL/MSL)4990 5120
TRANSPORT WND (MPH) E 21 E 23
VENT RATE (KT-FT) 89820 102400
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-222000-
NORTHERN HILLS-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 10
TEMP (24H TREND) 90 (+2) 72 (-1) 89
RH % (24H TREND) 59 (-8) 95 (-2) 59
WIND 20FT/EARLY(MPH) E 16 E 19 E 18
WIND 20FT/LATE(MPH) E 19 E 12 NE 19
MIXING HGT(FT-AGL/MSL)6020 5980
TRANSPORT WND (MPH) E 16 E 21
VENT RATE (KT-FT) 84280 107640
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-222000-
WEST COAST-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS NONE TSTMS
CHANCE PRECIP (%) 30 0 60
TEMP (24H TREND) 93 (+2) 74 (-1) 93
RH % (24H TREND) 56 (-9) 92 (-1) 56
WIND 20FT/EARLY(MPH) E 16 E 16 E 16
WIND 20FT/LATE(MPH) E 17 E 14 E 18
MIXING HGT(FT-AGL/MSL)4690 5220
TRANSPORT WND (MPH) E 13 E 13
VENT RATE (KT-FT) 51590 57420
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-222000-
EASTERN INTERIOR-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 20
TEMP (24H TREND) 89 (+3) 72 (-2) 89
RH % (24H TREND) 60 (-9) 95 (-1) 59
WIND 20FT/EARLY(MPH) E 16 E 14 E 16
WIND 20FT/LATE(MPH) E 16 E 14 E 14
MIXING HGT(FT-AGL/MSL)5050 6380
TRANSPORT WND (MPH) E 21 E 21
VENT RATE (KT-FT) 90900 114840
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-222000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 20
TEMP (24H TREND) 85 (+5) 70 (-3) 85
RH % (24H TREND) 66 (-13) 98 (0) 65
WIND 20FT/EARLY(MPH) E 14 E 11 E 13
WIND 20FT/LATE(MPH) E 14 E 11 E 13
MIXING HGT(FT-AGL/MSL)4550 4950
TRANSPORT WND (MPH) E 23 E 21
VENT RATE (KT-FT) 91000 89100
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-222000-
CENTRAL MOUNTAIN RANGE-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 10 0 50
TEMP (24H TREND) 90 (+7) 68 (-3) 89
RH % (24H TREND) 58 (-14) 96 (0) 59
WIND 20FT/EARLY(MPH) E 11 E 13 E 12
WIND 20FT/LATE(MPH) E 11 E 11 E 14
MIXING HGT(FT-AGL/MSL)6850 7640
TRANSPORT WND (MPH) E 12 E 18
VENT RATE (KT-FT) 68500 122240
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-222000-
CAYEY MOUNTAIN RANGE-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 40 20
TEMP (24H TREND) 84 (+3) 71 (-1) 85
RH % (24H TREND) 66 (-10) 97 (-2) 63
WIND 20FT/EARLY(MPH) E 13 E 12 E 13
WIND 20FT/LATE(MPH) E 13 E 11 E 13
MIXING HGT(FT-AGL/MSL)4720 5780
TRANSPORT WND (MPH) E 22 E 22
VENT RATE (KT-FT) 89680 109820
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-222000-
VIEQUES-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 10
TEMP (24H TREND) 89 (+1) 76 (-2) 89
RH % (24H TREND) 60 (-5) 88 (-1) 59
WIND 20FT/EARLY(MPH) E 18 E 18 E 18
WIND 20FT/LATE(MPH) E 17 E 18 E 17
MIXING HGT(FT-AGL/MSL)3840 3510
TRANSPORT WND (MPH) E 25 E 21
VENT RATE (KT-FT) 84480 63180
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-222000-
CULEBRA-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 10
TEMP (24H TREND) 91 (+3) 77 (-2) 90
RH % (24H TREND) 59 (-8) 89 (+1) 57
WIND 20FT/EARLY(MPH) E 18 E 18 E 17
WIND 20FT/LATE(MPH) E 17 E 19 E 17
MIXING HGT(FT-AGL/MSL)3760 3320
TRANSPORT WND (MPH) E 24 E 21
VENT RATE (KT-FT) 78960 59760
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-222000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE NONE NONE TSTMS
CHANCE PRECIP (%) 0 0 40
TEMP (24H TREND) 93 (+2) 75 (-2) 94
RH % (24H TREND) 45 (-10) 82 (-1) 45
WIND 20FT/EARLY(MPH) E 21 G29 E 20 E 19
WIND 20FT/LATE(MPH) SE 24 G31 E 12 E 26 G34
MIXING HGT(FT-AGL/MSL)4840 5640
TRANSPORT WND (MPH) E 22 E 17
VENT RATE (KT-FT) 91960 84600
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-222000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 10
TEMP (24H TREND) 87 (+1) 77 (-2) 87
RH % (24H TREND) 63 (-7) 89 (+1) 62
WIND 20FT/EARLY(MPH) E 19 E 18 E 18
WIND 20FT/LATE(MPH) E 18 E 19 E 18
MIXING HGT(FT-AGL/MSL)3910 3250
TRANSPORT WND (MPH) E 26 E 22
VENT RATE (KT-FT) 89930 61750
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-222000-
ST CROIX-
330 AM AST MON JUN 22 2026
TODAY TONIGHT TUE
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 10
TEMP (24H TREND) 89 (+2) 76 (-3) 88
RH % (24H TREND) 62 (-7) 90 (+1) 62
WIND 20FT/EARLY(MPH) E 19 E 19 E 18
WIND 20FT/LATE(MPH) E 19 E 19 E 18
MIXING HGT(FT-AGL/MSL)4480 5050
TRANSPORT WND (MPH) E 26 E 24
VENT RATE (KT-FT) 103040 106050
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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